2004-08-31 Ziemowit Laski <zlaski@apple.com>

        * Make-lang.in (CXX_AND_OBJCXX_OBJS): Add cp/cp-objcp-common.o.
        (cp/cp-lang.o): Depend on debug.h, gtype-cp.h and cp/cp-objcp-common.h.
        (cp/cp-decl.c): Do not depend on gtype-cp.h.
        (cp/cp-objcp-common.o): New target.
        * cp-lang.c: Include debug.h, cp-objcp-common.h and gtype-cp.h.
        (cxx_get_alias_set, cxx_warn_unused_global_decl, cp_expr_size,
        cp_tree_size, cp_var_mod_type_p, cxx_initialize_diagnostics): Move
        prototypes and definitions to cp-objcp-common.h and cp-objcp-common.c,
        respectively.
        (LANG_HOOKS_TREE_SIZE, LANG_HOOKS_FINISH,
        LANG_HOOKS_CLEAR_BINDING_STACK, LANG_HOOKS_INIT_OPTIONS,
        LANG_HOOKS_INITIALIZE_DIAGNOSTICS, LANG_HOOKS_HANDLE_OPTION,
        LANG_HOOKS_HANDLE_FILENAME, LANG_HOOKS_MISSING_ARGUMENT,
        LANG_HOOKS_POST_OPTIONS, LANG_HOOKS_GET_ALIAS_SET,
        LANG_HOOKS_EXPAND_CONSTANT, LANG_HOOKS_EXPAND_EXPR,
        LANG_HOOKS_EXPAND_DECL, LANG_HOOKS_PARSE_FILE,
        LANG_HOOKS_DUP_LANG_SPECIFIC_DECL, LANG_HOOKS_TRUTHVALUE_CONVERSION,
        LANG_HOOKS_SET_DECL_ASSEMBLER_NAME, LANG_HOOKS_MARK_ADDRESSABLE,
        LANG_HOOKS_PRINT_STATISTICS, LANG_HOOKS_PRINT_XNODE,
        LANG_HOOKS_PRINT_DECL, LANG_HOOKS_PRINT_TYPE,
        LANG_HOOKS_PRINT_IDENTIFIER, LANG_HOOKS_PRINT_ERROR_FUNCTION,
        LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL, LANG_HOOKS_WRITE_GLOBALS,
        LANG_HOOKS_FUNCTION_INIT, LANG_HOOKS_FUNCTION_FINAL,
        LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P,
        LANG_HOOKS_COMMON_ATTRIBUTE_TABLE, LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE,
        LANG_HOOKS_ATTRIBUTE_TABLE, LANG_HOOKS_TREE_INLINING_WALK_SUBTREES,
        LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN,
        LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS,
        LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P,
        LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P,
        LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P,
        LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN,
        LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN, LANG_HOOKS_EXPR_SIZE,
        LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR,
        LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION, LANG_HOOKS_MAKE_TYPE,
        LANG_HOOKS_TYPE_FOR_MODE, LANG_HOOKS_TYPE_FOR_SIZE,
        LANG_HOOKS_SIGNED_TYPE, LANG_HOOKS_UNSIGNED_TYPE,
        LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE, LANG_HOOKS_INCOMPLETE_TYPE_ERROR,
        LANG_HOOKS_TYPE_PROMOTES_TO, LANG_HOOKS_REGISTER_BUILTIN_TYPE,
        LANG_HOOKS_GIMPLIFY_EXPR, LANG_HOOKS_FOLD_OBJ_TYPE_REF): Move
        hooks to cp-objcp-common.h.
        (finish_file): New function.
        * cp-objcp-common.c: New file.
        * cp-objcp-common.h: New file.
        * cp-tree.h (cp_finish_file): New prototype.
        * decl.c: Do not include gtype-cp.h.
        * decl2.c (finish_file): Rename to cp_finish_file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@86837 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 167 insertions, 0 deletions

diff --git a/gcc/cp/cp-objcp-common.c b/gcc/cp/cp-objcp-common.c
new file mode 100644
index 00000000000..b8b8bad6a86
--- /dev/null
+++ b/gcc/cp/cp-objcp-common.c
@@ -0,0 +1,167 @@
+/* Some code common to C++ and ObjC++ front ends.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   Contributed by Ziemowit Laski  <zlaski@apple.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tree.h"
+#include "cp-tree.h"
+#include "c-common.h"
+#include "toplev.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "diagnostic.h"
+#include "debug.h"
+#include "cxx-pretty-print.h"
+#include "cp-objcp-common.h"
+
+/* Special routine to get the alias set for C++.  */
+
+HOST_WIDE_INT
+cxx_get_alias_set (tree t)
+{
+  if (IS_FAKE_BASE_TYPE (t))
+    /* The base variant of a type must be in the same alias set as the
+       complete type.  */
+    return get_alias_set (TYPE_CONTEXT (t));
+
+  /* Punt on PMFs until we canonicalize functions properly.  */
+  if (TYPE_PTRMEMFUNC_P (t))
+    return 0;
+
+  return c_common_get_alias_set (t);
+}
+
+/* Called from check_global_declarations.  */
+
+bool
+cxx_warn_unused_global_decl (tree decl)
+{
+  if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl))
+    return false;
+  if (DECL_IN_SYSTEM_HEADER (decl))
+    return false;
+
+  /* Const variables take the place of #defines in C++.  */
+  if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl))
+    return false;
+
+  return true;
+}
+
+/* Langhook for expr_size: Tell the backend that the value of an expression
+   of non-POD class type does not include any tail padding; a derived class
+   might have allocated something there.  */
+
+tree
+cp_expr_size (tree exp)
+{
+  if (CLASS_TYPE_P (TREE_TYPE (exp)))
+    {
+      /* The backend should not be interested in the size of an expression
+	 of a type with both of these set; all copies of such types must go
+	 through a constructor or assignment op.  */
+      gcc_assert (!TYPE_HAS_COMPLEX_INIT_REF (TREE_TYPE (exp))
+		  || !TYPE_HAS_COMPLEX_ASSIGN_REF (TREE_TYPE (exp))
+		  /* But storing a CONSTRUCTOR isn't a copy.  */
+		  || TREE_CODE (exp) == CONSTRUCTOR);
+      
+      /* This would be wrong for a type with virtual bases, but they are
+	 caught by the assert above.  */
+      return (is_empty_class (TREE_TYPE (exp))
+	      ? size_zero_node
+	      : CLASSTYPE_SIZE_UNIT (TREE_TYPE (exp)));
+    }
+  else
+    /* Use the default code.  */
+    return lhd_expr_size (exp);
+}
+
+/* Langhook for tree_size: determine size of our 'x' and 'c' nodes.  */
+size_t
+cp_tree_size (enum tree_code code)
+{
+  switch (code)
+    {
+    case TINST_LEVEL:		return sizeof (struct tinst_level_s);
+    case PTRMEM_CST: 		return sizeof (struct ptrmem_cst);
+    case BASELINK:		return sizeof (struct tree_baselink);
+    case TEMPLATE_PARM_INDEX: 	return sizeof (template_parm_index);
+    case DEFAULT_ARG:		return sizeof (struct tree_default_arg);
+    case OVERLOAD:		return sizeof (struct tree_overload);
+    default:
+      gcc_unreachable ();
+    }
+  /* NOTREACHED */
+}
+
+/* Returns true if T is a variably modified type, in the sense of C99.
+   FN is as passed to variably_modified_p.
+   This routine needs only check cases that cannot be handled by the
+   language-independent logic in tree.c.  */
+
+bool
+cp_var_mod_type_p (tree type, tree fn)
+{
+  /* If TYPE is a pointer-to-member, it is variably modified if either
+     the class or the member are variably modified.  */
+  if (TYPE_PTR_TO_MEMBER_P (type))
+    return (variably_modified_type_p (TYPE_PTRMEM_CLASS_TYPE (type), fn)
+	    || variably_modified_type_p (TYPE_PTRMEM_POINTED_TO_TYPE (type),
+					 fn));
+
+  /* All other types are not variably modified.  */
+  return false;
+}
+
+/* Construct a C++-aware pretty-printer for CONTEXT.  It is assumed
+   that CONTEXT->printer is an already constructed basic pretty_printer.  */
+void
+cxx_initialize_diagnostics (diagnostic_context *context)
+{
+  pretty_printer *base = context->printer;
+  cxx_pretty_printer *pp = xmalloc (sizeof (cxx_pretty_printer));
+  memcpy (pp_base (pp), base, sizeof (pretty_printer));
+  pp_cxx_pretty_printer_init (pp);
+  context->printer = (pretty_printer *) pp;
+
+  /* It is safe to free this object because it was previously malloc()'d.  */
+  free (base);
+}
+
+/* Stubs to keep c-opts.c happy.  */
+void
+push_file_scope (void)
+{
+}
+
+void
+pop_file_scope (void)
+{
+}
+
+/* c-pragma.c needs to query whether a decl has extern "C" linkage.  */
+bool
+has_c_linkage (tree decl)
+{
+  return DECL_EXTERN_C_P (decl);
+}